Unexpected error during – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Unexpected error during ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, join and node.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Unexpected error during [{}]” classname is NodeJoinController.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         public void clusterStateProcessed(String source; ClusterState oldState; ClusterState newState) {
            for (MembershipAction.JoinCallback callback : callbacks) {
                try {
                    callback.onSuccess();
                } catch (Exception e) {
                    logger.error(() -> new ParameterizedMessage("unexpected error during [{}]"; source); e);
                }
            }
        }
    }





 

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